/*
package com.example.annotation;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Constraint(validatedBy = PasswordValidator.class)
public @interface ParamEqual {

    String message() default "参数不能为空";



    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};
}
*/
